[PATCH 2/6] ARM: keystone2: move update of the phys-to-virt constants into generic code

[Russell King - ARM Linux]

On Wed, Apr 08, 2015 at 05:56:49PM +0300, Grygorii.Strashko at linaro.org wrote:
> > +
> > +	/* Re-set the phys pfn offset, and the pv offset */
> > +	__pv_offset = PHYS_OFFSET + offset - PAGE_OFFSET;
> 
> So, here now:
> 
> __pv_offset = 0x8000 0000 + 0x7 8000 0000 - 0xC000 0000;
> 
> __pv_offset == 0x8 0000 0000 (KEYSTONE_HIGH_PHYS_START) - 0xC000 0000
> 
> code if offset will eq (new)PHYS_OFFSET == KEYSTONE_HIGH_PHYS_START:
> 
>   __pv_offset = offset - PAGE_OFFSET;

BTW, this could simply be changed to:

	__pv_offset += offset;

keeping the existing "delta" implementation.

> > +	__pv_phys_pfn_offset = PFN_DOWN(PHYS_OFFSET + offset);

and this to:

	__pv_phys_pfn_offset += PFN_DOWN(offset);

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